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IP Disputes

We handle a wide variety of disputes and provide pre-dispute advice. Our successful litigation and settlement practice spans all areas of intellectual property law, with particular emphasis on contentious work in the fields of not only patents and utility models, but also trademarks, design rights, copyrights, passing-off and other violations of the Act on Prevention of Unfair Competition. We also have ample experience in employee invention compensation cases. Our lawyers, including former judges of the Intellectual Property High Court and lawyers with technical backgrounds, who are familiar with both law and technology, pour their energy and skill into resolving the disputes, bringing fruitful results in many leading cases.

Many of our lawyers, who are fluent in English and German, have substantial experience with IP litigation and arbitration not only in Japan but also in the United States and other leading commercial jurisdictions. This breadth of exposure forms the basis of a cross-border window, which we think is unique in Japan: the ability to provide foreign clients with familiar context and reference points in making key litigation decisions.


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Related Seminars

February 14, 2020


Japan Patent Office: Strategies and Global Solutions Using International Arbitration and Mediation for Intellectual Property Disputes on SEP Licensing and FRAND (Panel Discussion)

Yoshimi Ohara 

September 20, 2019

NO&T Seminars

"Transboundary Innovation and Law"

Kenji Tosaki, Soichiro Fujiwara, Keiji Tonomura 

June 13, 2019

NO&T Seminars

US Patent Practice Seminar
"US Patent Litigation - What's Hot and What's Not"

Kenji Tosaki, Hironobu Tsukamoto 

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October, 2019



NO&T Asia Legal Review No.16 (October, 2019)

Annia Hsu 

July, 2019


The Legal 500: 3rd Edition Intellectual Property Comparative Guide - Japan

The In-House Lawyer (online)

Kenji Tosaki 

August, 2015


Japanese court recognizes copyrightability of industrial design for the first time – the Tripp Trapp chair case

NO&T Japan Legal Update No.2 (August, 2015)

Yoshimi Ohara 

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February 14, 2020


NO&T recognized by Chambers Global 2020

January 17, 2020


NO&T receives high evaluation in The Legal 500 Asia Pacific 2020

December 27, 2019


High evaluation received in Who's Who Legal: Global Guide

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